Bài 19: QDateEdit – Basic Widgets – PyQt6

self.date_edit = QDateEdit(self,calendarPopup=True)

today=date.today()
self.date_edit.setDate(today)
self.date_edit.setDisplayFormat("dd/MM/yyyy")

self.date_edit.editingFinished.connect(self.SelectedDate)

def SelectedDate(self):
    value = self.date_edit.date()
    print(type(value))
    print(str(value.toPyDate()))

self.date_edit.dateChanged.connect(self.ChangingDate)

def ChangingDate(self):
    value = self.date_edit.date()
    print(type(value))
    print(str(value.toPyDate()))

class Product:
    def __init__(self,ProductId,ProductName,Price,ExpiredDate,FreeTax):
        self.ProductId=ProductId
        self.ProductName=ProductName
        self.Price=Price
        self.ExpiredDate=ExpiredDate
        self.FreeTax=FreeTax
    def __str__(self):
        return str(self.ProductId) +" - "+self.ProductName

import json
import os

class FileFactory:
    #path: path to serialize array of product
    #arrData: array of Product
    def writeData(self,path,arrData):
        jsonString = json.dumps([item.__dict__ for item in arrData],default=str)
        jsonFile = open(path, "w")
        jsonFile.write(jsonString)
        jsonFile.close()
    #path: path to deserialize array of Product
    #ClassName: Product
    def readData(self,path,ClassName):
        if os.path.isfile(path) == False:
            return []
        file = open(path, "r")
        # Reading from file
        self.arrData = json.loads(file.read(), object_hook=lambda d: ClassName(**d))
        file.close()
        return self.arrData

# Form implementation generated from reading ui file 'MainWindow.ui'
#
# Created by: PyQt6 UI code generator 6.5.2
#
# WARNING: Any manual changes made to this file will be lost when pyuic6 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt6 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(457, 533)
        font = QtGui.QFont()
        font.setPointSize(10)
        MainWindow.setFont(font)
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap("images/ic_logo.jpg"), QtGui.QIcon.Mode.Normal, QtGui.QIcon.State.Off)
        MainWindow.setWindowIcon(icon)
        self.centralwidget = QtWidgets.QWidget(parent=MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.groupBox = QtWidgets.QGroupBox(parent=self.centralwidget)
        self.groupBox.setGeometry(QtCore.QRect(10, 20, 441, 161))
        self.groupBox.setStyleSheet("background-color: rgb(255, 213, 255);")
        self.groupBox.setFlat(False)
        self.groupBox.setCheckable(False)
        self.groupBox.setObjectName("groupBox")
        self.label = QtWidgets.QLabel(parent=self.groupBox)
        self.label.setGeometry(QtCore.QRect(30, 20, 47, 14))
        self.label.setObjectName("label")
        self.lineEditId = QtWidgets.QLineEdit(parent=self.groupBox)
        self.lineEditId.setGeometry(QtCore.QRect(110, 20, 251, 20))
        self.lineEditId.setObjectName("lineEditId")
        self.lineEditName = QtWidgets.QLineEdit(parent=self.groupBox)
        self.lineEditName.setGeometry(QtCore.QRect(110, 50, 251, 20))
        self.lineEditName.setObjectName("lineEditName")
        self.label_2 = QtWidgets.QLabel(parent=self.groupBox)
        self.label_2.setGeometry(QtCore.QRect(30, 50, 47, 14))
        self.label_2.setObjectName("label_2")
        self.lineEditPrice = QtWidgets.QLineEdit(parent=self.groupBox)
        self.lineEditPrice.setGeometry(QtCore.QRect(110, 80, 251, 20))
        self.lineEditPrice.setObjectName("lineEditPrice")
        self.label_3 = QtWidgets.QLabel(parent=self.groupBox)
        self.label_3.setGeometry(QtCore.QRect(30, 80, 47, 14))
        self.label_3.setObjectName("label_3")
        self.dateEditExpiredDate = QtWidgets.QDateEdit(parent=self.groupBox)
        self.dateEditExpiredDate.setGeometry(QtCore.QRect(110, 110, 110, 22))
        self.dateEditExpiredDate.setCalendarPopup(True)
        self.dateEditExpiredDate.setDate(QtCore.QDate(2023, 1, 1))
        self.dateEditExpiredDate.setObjectName("dateEditExpiredDate")
        self.label_4 = QtWidgets.QLabel(parent=self.groupBox)
        self.label_4.setGeometry(QtCore.QRect(30, 110, 71, 16))
        self.label_4.setObjectName("label_4")
        self.chkFreeTax = QtWidgets.QCheckBox(parent=self.groupBox)
        self.chkFreeTax.setGeometry(QtCore.QRect(110, 140, 151, 18))
        self.chkFreeTax.setObjectName("chkFreeTax")
        self.groupBox_2 = QtWidgets.QGroupBox(parent=self.centralwidget)
        self.groupBox_2.setGeometry(QtCore.QRect(10, 240, 441, 241))
        self.groupBox_2.setStyleSheet("background-color: rgb(255, 213, 255);")
        self.groupBox_2.setObjectName("groupBox_2")
        self.verticalLayout = QtWidgets.QVBoxLayout(self.groupBox_2)
        self.verticalLayout.setObjectName("verticalLayout")
        self.listWidgetProduct = QtWidgets.QListWidget(parent=self.groupBox_2)
        self.listWidgetProduct.setStyleSheet("")
        self.listWidgetProduct.setObjectName("listWidgetProduct")
        self.verticalLayout.addWidget(self.listWidgetProduct)
        self.label_5 = QtWidgets.QLabel(parent=self.centralwidget)
        self.label_5.setGeometry(QtCore.QRect(10, 0, 441, 31))
        font = QtGui.QFont()
        font.setPointSize(15)
        font.setBold(True)
        font.setWeight(75)
        self.label_5.setFont(font)
        self.label_5.setStyleSheet("color: rgb(0, 0, 127);")
        self.label_5.setAlignment(QtCore.Qt.AlignmentFlag.AlignCenter)
        self.label_5.setObjectName("label_5")
        self.groupBox_3 = QtWidgets.QGroupBox(parent=self.centralwidget)
        self.groupBox_3.setGeometry(QtCore.QRect(10, 180, 441, 61))
        self.groupBox_3.setStyleSheet("background-color: rgb(255, 254, 225);")
        self.groupBox_3.setTitle("")
        self.groupBox_3.setObjectName("groupBox_3")
        self.pushButtonNew = QtWidgets.QPushButton(parent=self.groupBox_3)
        self.pushButtonNew.setGeometry(QtCore.QRect(50, 10, 75, 41))
        self.pushButtonNew.setStyleSheet("background-color: rgb(170, 255, 255);")
        icon1 = QtGui.QIcon()
        icon1.addPixmap(QtGui.QPixmap("images/ic_add.png"), QtGui.QIcon.Mode.Normal, QtGui.QIcon.State.Off)
        self.pushButtonNew.setIcon(icon1)
        self.pushButtonNew.setIconSize(QtCore.QSize(32, 32))
        self.pushButtonNew.setObjectName("pushButtonNew")
        self.pushButtonSave = QtWidgets.QPushButton(parent=self.groupBox_3)
        self.pushButtonSave.setGeometry(QtCore.QRect(180, 10, 75, 41))
        self.pushButtonSave.setStyleSheet("background-color: rgb(170, 255, 255);")
        icon2 = QtGui.QIcon()
        icon2.addPixmap(QtGui.QPixmap("images/ic_save.png"), QtGui.QIcon.Mode.Normal, QtGui.QIcon.State.Off)
        self.pushButtonSave.setIcon(icon2)
        self.pushButtonSave.setIconSize(QtCore.QSize(32, 32))
        self.pushButtonSave.setObjectName("pushButtonSave")
        self.pushButtonDelete = QtWidgets.QPushButton(parent=self.groupBox_3)
        self.pushButtonDelete.setGeometry(QtCore.QRect(310, 10, 91, 41))
        self.pushButtonDelete.setStyleSheet("background-color: rgb(170, 255, 255);")
        icon3 = QtGui.QIcon()
        icon3.addPixmap(QtGui.QPixmap("images/ic_remove.png"), QtGui.QIcon.Mode.Normal, QtGui.QIcon.State.Off)
        self.pushButtonDelete.setIcon(icon3)
        self.pushButtonDelete.setIconSize(QtCore.QSize(32, 32))
        self.pushButtonDelete.setObjectName("pushButtonDelete")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(parent=MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 457, 22))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(parent=MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "Trần Duy Thanh - Food Management"))
        self.groupBox.setTitle(_translate("MainWindow", "Product Detail:"))
        self.label.setText(_translate("MainWindow", "ID:"))
        self.label_2.setText(_translate("MainWindow", "Name:"))
        self.label_3.setText(_translate("MainWindow", "Price:"))
        self.label_4.setText(_translate("MainWindow", "Expired Date:"))
        self.chkFreeTax.setText(_translate("MainWindow", "Free Tax"))
        self.groupBox_2.setTitle(_translate("MainWindow", "List of Products"))
        self.label_5.setText(_translate("MainWindow", "Food Management"))
        self.pushButtonNew.setText(_translate("MainWindow", "New"))
        self.pushButtonSave.setText(_translate("MainWindow", "Save"))
        self.pushButtonDelete.setText(_translate("MainWindow", "Delete"))

import datetime

from PyQt6.QtCore import Qt
from PyQt6.QtGui import QIcon
from PyQt6.QtWidgets import QListWidgetItem, QMessageBox

from FileFactory import FileFactory
from MainWindow import Ui_MainWindow
from Product import Product

class MainWindowEx(Ui_MainWindow):
    def __init__(self):
        self.arrData=[]
        self.fileFactory=FileFactory()

def setupUi(self, MainWindow):
    super().setupUi(MainWindow)
    self.MainWindow=MainWindow
    self.arrData = self.fileFactory.readData("database.json", Product)
    self.showProductIntoQListWidget()
    self.pushButtonNew.clicked.connect(self.processNew)
    self.pushButtonSave.clicked.connect(self.processSave)        
    self.pushButtonDelete.clicked.connect(self.processDelete)
    self.listWidgetProduct.itemSelectionChanged.connect(self.processItemSelection)

def showProductIntoQListWidget(self):
    self.listWidgetProduct.clear()
    for product in self.arrData:
        item=QListWidgetItem()
        item.setData(Qt.ItemDataRole.UserRole, product)
        item.setText(str(product))
        item.setCheckState(Qt.CheckState.Unchecked)
        if product.FreeTax==True:
            item.setIcon(QIcon("images/ic_tax.png"))
        else:
            item.setIcon(QIcon("images/ic_tax_including.png"))
        if isinstance(product.ExpiredDate,str):
            product.ExpiredDate=datetime.date.fromisoformat(product.ExpiredDate)
        day=(product.ExpiredDate-datetime.date.today()).days
        if day<=7:
            item.setForeground(Qt.GlobalColor.red)
        self.listWidgetProduct.addItem(item)

def processNew(self):
    self.lineEditId.setText("")
    self.lineEditName.setText("")
    self.lineEditPrice.setText("")
    self.chkFreeTax.setCheckState(Qt.CheckState.Unchecked)
    self.lineEditId.setFocus()

def processSave(self):
    id=self.lineEditId.text()
    name=self.lineEditName.text()
    price=float(self.lineEditPrice.text())
    date=self.dateEditExpiredDate.date().toPyDate()
    freeTax=self.chkFreeTax.isChecked()
    newItem = Product(id,name, price, date,freeTax)
    oldItem=self.checkDuplicate(id)
    if oldItem !=None:
        index = self.arrData.index(oldItem)
        self.arrData[index]=newItem
    else:
        self.arrData.append(newItem)
    self.showProductIntoQListWidget()
    self.fileFactory.writeData("database.json",self.arrData)

def checkDuplicate(self,id):
    items=[x for x in self.arrData if x.ProductId == id]
    if len(items)==0:
        return None
    return items[0]

def processDelete(self):
    answer = QMessageBox.question(
        self.MainWindow,
        'Confirmation',
        'Do you want to remove checked Items?',
        QMessageBox.StandardButton.Yes |
        QMessageBox.StandardButton.No
    )
    if answer == QMessageBox.StandardButton.No:
        return
    for index in range(self.listWidgetProduct.count()):
        item=self.listWidgetProduct.item(index)
        if item.checkState()==Qt.CheckState.Checked:
            product=item.data(Qt.ItemDataRole.UserRole)
            self.arrData.remove(product)
    self.showProductIntoQListWidget()
    self.fileFactory.writeData("database.json", self.arrData)

def processItemSelection(self):
    row=self.listWidgetProduct.currentRow()
    item=self.listWidgetProduct.item(row)
    product=item.data(Qt.ItemDataRole.UserRole)
    self.lineEditId.setText(str(product.ProductId))
    self.lineEditName.setText(product.ProductName)
    self.lineEditPrice.setText(str(product.Price))
    if isinstance(product.ExpiredDate, str):
        product.ExpiredDate = datetime.date.fromisoformat(product.ExpiredDate)
    self.dateEditExpiredDate.setDate(product.ExpiredDate)
    if product.FreeTax:
        self.chkFreeTax.setCheckState(Qt.CheckState.Checked)
    else:
        self.chkFreeTax.setCheckState(Qt.CheckState.Unchecked)

import datetime

from PyQt6.QtCore import Qt
from PyQt6.QtGui import QIcon
from PyQt6.QtWidgets import QListWidgetItem, QMessageBox

from FileFactory import FileFactory
from MainWindow import Ui_MainWindow
from Product import Product

class MainWindowEx(Ui_MainWindow):
    def __init__(self):
        self.arrData=[]
        self.fileFactory=FileFactory()
    def setupUi(self, MainWindow):
        super().setupUi(MainWindow)
        self.MainWindow=MainWindow
        self.arrData = self.fileFactory.readData("database.json", Product)
        self.showProductIntoQListWidget()
        self.pushButtonNew.clicked.connect(self.processNew)
        self.pushButtonSave.clicked.connect(self.processSave)
        self.pushButtonDelete.clicked.connect(self.processDelete)
        self.listWidgetProduct.itemSelectionChanged.connect(self.processItemSelection)
    def showProductIntoQListWidget(self):
        self.listWidgetProduct.clear()
        for product in self.arrData:
            item=QListWidgetItem()
            item.setData(Qt.ItemDataRole.UserRole, product)
            item.setText(str(product))
            item.setCheckState(Qt.CheckState.Unchecked)
            if product.FreeTax==True:
                item.setIcon(QIcon("images/ic_tax.png"))
            else:
                item.setIcon(QIcon("images/ic_tax_including.png"))
            if isinstance(product.ExpiredDate,str):
                product.ExpiredDate=datetime.date.fromisoformat(product.ExpiredDate)
            day=(product.ExpiredDate-datetime.date.today()).days
            if day<=7:
                item.setForeground(Qt.GlobalColor.red)
            self.listWidgetProduct.addItem(item)
    def processNew(self):
        self.lineEditId.setText("")
        self.lineEditName.setText("")
        self.lineEditPrice.setText("")
        self.chkFreeTax.setCheckState(Qt.CheckState.Unchecked)
        self.lineEditId.setFocus()
    def checkDuplicate(self,id):
        items=[x for x in self.arrData if x.ProductId == id]
        if len(items)==0:
            return None
        return items[0]
    def processSave(self):
        id=self.lineEditId.text()
        name=self.lineEditName.text()
        price=float(self.lineEditPrice.text())
        date=self.dateEditExpiredDate.date().toPyDate()
        freeTax=self.chkFreeTax.isChecked()
        newItem = Product(id,name, price, date,freeTax)
        oldItem=self.checkDuplicate(id)
        if oldItem !=None:
            index = self.arrData.index(oldItem)
            self.arrData[index]=newItem
        else:
            self.arrData.append(newItem)
        self.showProductIntoQListWidget()
        self.fileFactory.writeData("database.json",self.arrData)
    def processDelete(self):
        answer = QMessageBox.question(
            self.MainWindow,
            'Confirmation',
            'Do you want to remove checked Items?',
            QMessageBox.StandardButton.Yes |
            QMessageBox.StandardButton.No
        )
        if answer == QMessageBox.StandardButton.No:
            return
        for index in range(self.listWidgetProduct.count()):
            item=self.listWidgetProduct.item(index)
            if item.checkState()==Qt.CheckState.Checked:
                product=item.data(Qt.ItemDataRole.UserRole)
                self.arrData.remove(product)
        self.showProductIntoQListWidget()
        self.fileFactory.writeData("database.json", self.arrData)
    def processItemSelection(self):
        row=self.listWidgetProduct.currentRow()
        item=self.listWidgetProduct.item(row)
        product=item.data(Qt.ItemDataRole.UserRole)
        self.lineEditId.setText(str(product.ProductId))
        self.lineEditName.setText(product.ProductName)
        self.lineEditPrice.setText(str(product.Price))
        if isinstance(product.ExpiredDate, str):
            product.ExpiredDate = datetime.date.fromisoformat(product.ExpiredDate)
        self.dateEditExpiredDate.setDate(product.ExpiredDate)
        if product.FreeTax:
            self.chkFreeTax.setCheckState(Qt.CheckState.Checked)
        else:
            self.chkFreeTax.setCheckState(Qt.CheckState.Unchecked)
    def show(self):
        self.MainWindow.show()

from PyQt6.QtWidgets import QApplication, QMainWindow

from MainWindowEx import MainWindowEx

app=QApplication([])
myWindow=MainWindowEx()
myWindow.setupUi(QMainWindow())
myWindow.show()
app.exec()